Finding the Fourth Proportional to 220,128.78, 330,147 and 62,314.86

Step by Step Solution

1. Step 1: Write the proportion equation
   220,128.78 : 330,147 = 62,314.86 : x
2. Step 2: Convert to fraction form
   220,128.78/330,147 = 62,314.86/x
3. Step 3: Cross multiply
   220,128.78x = 330,147 × 62,314.86
4. Step 4: Simplify right side
   220,128.78x = 20,573,064,084.42
5. Step 5: Solve for x
   x = 20,573,064,084.42/220,128.78
6. Step 6: Final answer
   x = 93,459.22